<div class="doc-item" id="doc-595"><h2 class="doc-item-name">areduce<span class="namespace">(clojure.core)</span></h2><p class="macro">Macro</p><ul class="var-arglists"><li>(<span class="var-name">areduce</span> a idx ret init expr)</li></ul><div class="var-docstring"><p>Reduces an expression across an array a, using an index named idx,
  and return value named ret, initialized to init, setting ret to the evaluation of expr at
  each step, returning ret.</p></div><div class="var-source"><pre>; clojure/core.clj:3149
(defmacro areduce
  [a idx ret init expr]
  `(let [a# ~a]
     (loop  [~idx (int 0) ~ret ~init]
       (if (&lt; ~idx  (alength a#))
         (recur (unchecked-inc ~idx) ~expr)
         ~ret))))</pre></div><div class="license"><p>Copyright (c) Rich Hickey. All rights reserved.</p><p>The use and distribution terms for this software are covered by the <a href="http://opensource.org/licenses/eclipse-1.0.php">Eclipse Public License 1.0</a>, which can be found in the file
          epl-v10.html at the root of this distribution. By using this software
          in any fashion, you are agreeing to be bound by the terms of this
          license. You must not remove this notice, or any other, from this
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